Cell cycle Start is coupled to entry into the yeast metabolic cycle across diverse strains and growth rates.

Burnetti, AJ

Aydin, M

Buchler, NE

2015-12-09T16:32:57Z

2015-11-04

Cells have evolved oscillators with different frequencies to coordinate periodic processes. Here, we studied the interaction of two oscillators, the cell division cycle (CDC) and yeast metabolic cycle (YMC), in budding yeast. Previous work suggested that the CDC and YMC interact to separate high oxygen consumption from DNA replication to prevent genetic damage. To test this hypothesis, we grew diverse strains in chemostat and measured DNA replication and oxygen consumption with high temporal resolution at different growth rates. Our data showed that high oxygen consumption is not strictly separated from DNA replication; rather, cell cycle Start is coupled with the initiation of high oxygen consumption and catabolism of storage carbohydrates. The logic of this YMC-CDC coupling may be to ensure that DNA replication and cell division occur only when sufficient cellular energy reserves have accumulated. Our results also uncovered a quantitative relationship between CDC period and YMC period across different strains. More generally, our approach shows how studies in genetically diverse strains efficiently identify robust phenotypes and steer the experimentalist away from strain-specific idiosyncrasies.

http://www.ncbi.nlm.nih.gov/pubmed/26538026

mbc.E15-07-0454

1939-4586

https://hdl.handle.net/10161/11135

ENG

Mol Biol Cell

10161/11291

http://hdl.handle.net/10161/11291

10.1091/mbc.E15-07-0454

Cell cycle Start is coupled to entry into the yeast metabolic cycle across diverse strains and growth rates.

Journal article

http://www.ncbi.nlm.nih.gov/pubmed/26538026

Biology

Duke

Physics

Trinity College of Arts & Sciences

Published